Follows a group of Hong Kong forensic scientists working together with the Hong Kong police to solve murders through physical evidence left over from crime scenes.
POK gets framed and becomes involved in a hoax bomb threat. POK remembers he met a clown in the shopping mall and he suspects that it was the guy who took his fingerprints. POK gets attacked while looking around for the clown. YAU holds a celebration party but POK does not show up as promised. Everyone frets about his absence and wonders where he has gone. POK awakes from unconsciousness and finds himself being locked up in a container. The clown claims that he has set up a game for POK and his friends, in which his friends will be made to see him die. Despite what the guy has said, POK remains steadfast in his belief that his friends will be able to save him. YAU receives a parcel and finds inside a videotape of POK being locked up in the dark. The police try to find out how POK is kidnapped. SUM gets so worried when he receives another videotape showing POK suffering from dehydration.… ...